Wiping provision for grinding rolls



March 8, 1932. I I G. A. VASEL WIPING PROVISION FOR GRINDING ROLLS Filed Feb. 14, 1930 jlsaszz Patented Mar. 8, 1932 UNITED STATES PATENT OFFICE GUSTAV A. VASEL, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR- 'I'O WILLIAM WHARTON, JR. 86 COMPANY, INCORPORATED, 013" EASTON, PENNSYLVANIA, A COR- PORATION OF PENNSYLVANIA WIPING PROVISION FOR GRINDING ROLLS I Applicationfiled February 14, 1930. Serial No. 428,532.

Machines for grinding colors, inks and other viscous materials have, as a usual comshorter, as to its grinding face, than the intermediate and the problem of the instant case is to provide for contemporaneous wiping of the rolls notwithstanding their inequality of length. 7

One embodiment of the invention is illustrated in the accompanying drawings forming a part hereof, wherein Figure 1 is a sectional plan view of co-acting grinding rolls equipped with wiping provisions embodying my invention.

Fig. 2 is an end view of the same.

Fig. 3 is a detail view of one of the end plates.

In the drawings the low speed, intermediate speed and high speed rolls are, respectively, represented by the numerals 1, 2 and 3 and they are, as to their grinding faces, of unequal length, the low speed roll being shorter than the intermediate speed roll, which. in turn is shorter than the high speed roll. Notwithstanding the inequality of the length of their respective grinding faces, it is a merit of my invention that I may utilize the end or hopper plates for contemporaneous wiping of the low and intermediate speed rolls. In reducing my inventive thought to practice the end plates 4: whose body portions 5 cooperate with the bight of the rolls to form a hopper provision, have each a depending narrow neck portion or stem which defines differential arch portions 6 and 7 whereof the one overlies the trunnionof the low speed roll and abuts against and wipes Under grinding action the end plates, obviously, may vary and are or may be of conventional form, it has not been considered necessary to illustrate them, it being understood that theyv will provide for adjustment of the plate in the directions indicated by the arrows to maintain cleaning contact as the plates and rolls wear. 1

Having described my invention, I claim 1. The combination of co-acting grinding rolls of differential length and differential speed, and a hopper plate for wiping contact with said rolls, said plate having a flat face for Wiping contact with one end of one roll and a marginal edge at right angles to such face curved to overlie and have wipingcontaplt with the peripheral surface of the other ro 2; The combination with co-acting grinding rolls of differential lengths and speeds, and a hopper plate formed at one side of the longitudinal median line to overlie the trunnion of one roll and present a flat wiping contact with such roll, the plate on the opposite side of the median line having an arch edge formation to overlie and having wiping contact with the surface of the remaining roll.

3. A hopper element for use for grinding rolls of differential lengths, comprising a flat plate having a depending neck, the side face of the plate on one side of the neck being have wiping contact with the projecting surface of the other roll.

' In testimony whereof I afliX my signature.

GUSTAV A. VASEL.

the mounting, support and adjustment of the I 

